Cartridge lenght between loads?

[mnhunter2]

I worked up a sweet load for my 300 wtby with a 150gr nosler blastic tip bullet and I am working on a load with the 168 berger VLD and was wonder if it would like the same lenght or do I need to start over.

 

[7mm Magnum]

Sorry there Bucko',.. but if you change out that projectile you be starting from scratch all over again.

Your comparing apples to oranges,...

 

[boomtube]

Yep. You may not NEED to start over but you will never know unless you try.

Ain't no 'free lunch" in this stuff, nor even a free sandwich after you bought and paid for the first one.